This study aims to develop a novel equation for estimating sodium intake in anuric peritoneal dialysis patients, and then to validate its precision and accuracy.
Dietary sodium intake is closely associated with the prognosis of chronic kidney disease (CKD) patients. Previous studies have developed an equation for estimating dietary sodium intake through 24-hour urine sodium in CKD, which are not applicable in peritoneal dialysis patients. This study aims to develop a novel equation for estimating dietary sodium intake in 20 anuric peritoneal dialysis patients, using accurately measured dietary sodium as the dependent variable and peritoneal sodium removal and its related variables as independent variables, and then to validate the precision and accuracy of the novel equation in another 10 anuric peritoneal dialysis patients.
Study Type
OBSERVATIONAL
Enrollment
30
Peking University First Hospital
Beijing, China
determination coefficient of the novel equation
Determination coefficient will be assessed as the square of the multiple correlation coefficient of the novel equation for estimating sodium intake in peritoneal dialysis.
Time frame: July 3, 2023, to March 1, 2024
bias of the novel equation
Bias will be assessed as the median of the difference between the estimated and measured dietary sodium values.
Time frame: July 3, 2023, to March 1, 2024
precision of the novel equation
Precision will be assessed as the standard deviation (SD) for the absolute value of difference between the estimated and measured dietary sodium values.
Time frame: July 3, 2023, to March 1, 2024
accuracy of the novel equation
Accuracy will be assessed as the percentage of estimates that differed \>20% from the measured dietary sodium values (1-P20) .
Time frame: July 3, 2023, to March 1, 2024
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